The Octane Number is retained owing to HZSM 5 � � s excellent ability of aromatization, isomerization and alkylation.HZSM-5沸石对汽油的降烯烃作用得益于其优异的芳构化 、 异构化和烷基化性能.These derivatives are readily obtained by alkylation of 2 - mer...
These derivatives are readily obtained by alkylation of 2 - mercaptopyridine and alkyl halides under alkaline conditions.这些衍生物可以容易地在碱性条件下通过 2- 巯基吡啶和卤代烷的烷基化而得到.The different contents of various alkylation products were ob...
The programme seemed false and sugary, and the characters smug.这个节目看起来矫揉造作，而其中的人物还自我感觉良好。Do you eat sweets, cakes or sugary snacks?你吃糖果、蛋糕或甜点吗？Sugary canned drinks rot your teeth.罐装的甜饮料会腐蚀牙齿。Wine or sugary drinks inhibit...
Beauty of the calligraphy mirroring the beauty of a mind.美丽的书法,映现美的心.Unfortunately and mirroring 1997 – this scenario disintegrates the minute sentiment stumbles.不幸的是,一旦人气下降,这种前景就有可能瓦解,再现1997年的情况.There is a further mirro...